forked from Imagelibrary/binutils-gdb
42019af621
SME2 defines a new 512-bit register named ZT0, and it is only available if SME is also supported. The ZT0 state is valid only if the SVCR ZA bit is enabled. Otherwise its contents are empty (0). The target description is dynamic and gets generated at runtime based on the availability of the feature. Validated under Fast Models. Reviewed-by: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* Common AArch64 Linux arch-specific definitions for the scalable
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extensions: SVE and SME.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef ARCH_AARCH64_SCALABLE_LINUX_H
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#define ARCH_AARCH64_SCALABLE_LINUX_H
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#include "gdbsupport/common-defs.h"
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#include "gdbsupport/common-regcache.h"
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/* Feature check for Scalable Matrix Extension. */
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#ifndef HWCAP2_SME
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#define HWCAP2_SME (1 << 23)
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#endif
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/* Feature check for Scalable Matrix Extension 2. */
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#ifndef HWCAP2_SME2
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#define HWCAP2_SME2 (1UL << 37)
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#define HWCAP2_SME2P1 (1UL << 38)
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#endif
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/* Streaming mode enabled/disabled bit. */
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#define SVCR_SM_BIT (1 << 0)
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/* ZA enabled/disabled bit. */
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#define SVCR_ZA_BIT (1 << 1)
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/* Mask including all valid SVCR bits. */
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#define SVCR_BIT_MASK (SVCR_SM_BIT | SVCR_ZA_BIT)
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/* SVE/SSVE-related constants used for an empty SVE/SSVE register set
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dumped to a core file. When SME is supported, either the SVE state or
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the SSVE state will be empty when it is dumped to a core file. */
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#define SVE_CORE_DUMMY_SIZE 0x220
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#define SVE_CORE_DUMMY_MAX_SIZE 0x2240
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#define SVE_CORE_DUMMY_VL 0x10
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#define SVE_CORE_DUMMY_MAX_VL 0x100
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#define SVE_CORE_DUMMY_FLAGS 0x0
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#define SVE_CORE_DUMMY_RESERVED 0x0
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/* Return TRUE if the SVE state in the register cache REGCACHE
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is empty (zero). Return FALSE otherwise. */
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extern bool sve_state_is_empty (const struct reg_buffer_common *reg_buf);
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#endif /* ARCH_AARCH64_SCALABLE_LINUX_H */
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